JP2009158357A - Plug-falloff stopping tool - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a low-cost plug-falloff stopping tool capable of being integrally structured in a thin plate without needing a large space around the plug, and coping with differences in dimensional specifications of plugs or variations in shapes, if any, with the same component. <P>SOLUTION: The plug-falloff stopping tool 15 for preventing the plug 10 plugged into a jack 11 from falling off is provided with a frame member 16 to cover the jack 11 so as to be fixed in a pull-off direction of the plug 10, and the frame member 16 is equipped with a pair of arm plates 20 extended toward a plug side from a jack-wrapping part 19, for pinching the plug 10 and fixing it in a plug-falloff direction. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a plug stopper that prevents a plug inserted into a jack from being pulled out, and in particular, a plug that is mounted on the jack side and includes a frame member having a pair of arm plates that sandwich the plug. It relates to a stopper.

  For example, a rectangular plug is formed into a shape that can be inserted into the opening with a slight gap with respect to the front opening of the box-shaped jack, and the plug is inserted into the opening of the jack to insert the plug into the back of the opening. There is known a connector that is connected to a group of terminals. Such a connector can be connected simply by inserting the plug into the opening of the jack, but the plug may be pulled out of the jack by an unexpected external force. In order to prevent the plug from coming off, various types of retaining devices have been disclosed.

  One of them is a plug with an elastically displaceable lock lever with one end integrally attached to the tip of the rectangular plug body and the other end extending obliquely outward of the plug body. A hooking portion that engages with a locking portion of the lock lever of the plug is provided near the front edge on the inside of the portion. In this case, the locking portion of the lock lever is displaced together with the lever by elastic depression of the lever, and by pushing down the lock lever, the engagement portion of the lever and the latching portion on the jack side And the plug can be pulled out. When the lock lever is released, the plug is prevented from being pulled out.

  Even in a plug with a lock lever having such a structure, when the lock lever is pushed down for some unexpected reason, or when the lock lever deteriorates due to aging and the base portion of the lever is damaged, the plug is I easily get out of the jack. In order to prevent this, a modular plug attaching / detaching preventing tool as disclosed in Patent Document 1 is disclosed.

According to this, the holding frame that surrounds the outer peripheral portion of the plug including the extension portion of the lock lever is inserted from the tip of the plug, and the holding portion is inserted from the rear portion of the plug with the plug inserted into the jack. An insertion member having a recess for accommodating the lock lever extension is inserted between the frame and the upper surface of the plug on the lower side of the lock lever extension. By supporting the vicinity of the base portion of the lock lever from the inner side (lower side) at the front end portion thereof, the push-down operation of the lock lever is disabled, and breakage of the base of the lock lever is prevented.
JP 2007-157654 A

  As described above, the lock lever operating part (extension part) of the plug with the lock lever protrudes obliquely outward from the plug main body part. There is a possibility that the lock lever may be broken by being pushed down, repeatedly used, or by deterioration of the resin due to hydrolysis due to moisture contained in the air (with humidity). In order to avoid such breakage of the lock lever, some lock lever portions are made of metal, but the cost is high and the plug itself is expensive.

  Since the structure described in Patent Document 1 has a structure in which the entire outer portion of the plug including the lock lever protruding obliquely outward from the plug main body portion is covered with a holding frame, the outer shape becomes large and around the plug. A large space is required and it cannot be used in a narrow space.

  Further, it is necessary to insert the insertion member between the holding frame and the upper side surface of the plug main body so as to determine the position of the holding frame with respect to the plug, and the holding member and the insertion member are rigid members that do not easily deform. As a whole, there was a problem that the cost was high. Further, when the plug is removed from the jack, it is necessary to remove the holding frame after removing the insertion member from the holding frame, and the insertion member is firmly inserted into the holding frame and fixed in time. In such a case, there is a problem that it is difficult to remove the insertion member.

The present invention has been made in view of the above circumstances, does not require a large space around the plug, is very easy to attach to the jack, and does not interfere with the plug insertion or extraction operation with respect to the jack. It is another object of the present invention to provide a low-cost plug retainer that can be handled with the same retainer even if the dimensional specifications of the plug are slightly different.
When the present invention is applied to a plug with a lock lever, even if the lock lever is broken by an external force after the plug is inserted or the material of the lock lever is deteriorated due to aging, the plug It is an object of the present invention to provide a plug stopper that can maintain an effective terminal contact of a jack.

In order to solve the above-mentioned problem, a plug retainer according to the present invention is a plug retainer that prevents a plug inserted into a jack from being pulled out,
A frame member that covers the jack so as to be fixed to the jack in the extraction direction of the plug;
The frame member has a pair of arm plates that extend from the jack enclosure portion toward the plug and that sandwich the plug and fix it in the plug extraction direction.
With the above configuration, the connectors can be fixed with a simple operation of simply covering the frame member with the connector including the jack and the plug, and the frame member is in close contact with the side portion of the connector, so that a large space is provided around the connector. do not need.

Further, the pair of arm plates of the frame member have end portions that are narrowly spaced so as to engage the rear end shoulders of the plug, and are clamped to clamp the end portions on the outer periphery of the cord of the plug. It has a band. Further preferably, the fastening band is formed of a member having elasticity.
With the above configuration, the pair of arm plates of the frame member that holds the shoulder at the rear end of the plug is tightened with a band, so that the pair of arm plates at the holding portion does not open carelessly, and the plug can be securely prevented from coming off. it can.

Further, at least the pair of arm plates of the frame member is formed of an elastic plate, and an intermediate portion of the arm plate reaching the end portion is formed on an inclined surface that is engaged with a rear end shoulder portion of the plug. Features.
With the above structure, the rear end shoulder of the plug is pressed by the inclined surfaces of the pair of arm plates of the frame member, so that the same retainer can be used effectively even if the length of the plug is slightly different. Retaining can be performed.

Further, the frame member is integrally fixed to the jack.
With the above configuration, since the frame member is integrally fixed to the jack, the connectors can be fixed simply by inserting a plug into the jack.

The plug has an elastically displaceable lock lever having one end attached to the tip of the plug body and the other end extending outward of the plug body.
The jack includes a hooking portion that engages with a locking portion of the lock lever by inserting the plug, and that disengages from the locking portion by pushing down the lock lever.
With the above configuration, even if the lock lever is damaged and the lock function of the plug is lost, the plug can be prevented from being pulled out, and the resin plug itself is easily deteriorated or partially damaged. Even in this case, since the plug outer portion is protected by the frame member, the connection of the connector can be effectively maintained.

More preferably, the frame member is a metal thin plate. Alternatively, a synthetic resin plate is used.
Thus, forming the frame member as a thin metal plate can be easily and inexpensively manufactured by bending press processing of a single metal strip. In addition, the synthetic resin plate can be formed easily and inexpensively by molding or the like.

According to the present invention, a large space around the plug is not required, the mounting to the jack is extremely simple, the plug is not inserted into or extracted from the jack, and the dimensions of the plug are specified. Even if they are slightly different, they can be handled with the same retaining tool.
In addition, when applied to a plug with a lock lever, the plug and jack are effective even if the lock lever breaks due to external force after the plug is inserted or the material of the lock lever deteriorates and breaks with time. Terminal contact can be maintained.

  DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments of a plug retainer according to the present invention will be described in detail with reference to the drawings.

First, a connector to which a plug retainer according to an embodiment of the present invention is applied and a mounted state thereof will be described with reference to FIGS.
7 to 9 show examples of connectors (plugs and jacks) to which the plug retainer according to the embodiment of the present invention is applied. FIG. 7 is an external perspective view of a plug with a lock lever. 8 is a perspective view of a state in which the plug shown in FIG. 7 is attached to the jack, and FIG. 9 is a side sectional view of the state in which the plug is inserted into the jack and connected.

  As shown in FIG. 7, the plug 10 is formed by exposing a terminal group (not shown) on the distal end surface or the lower surface of the distal end of the rectangular parallelepiped plug body portion 1, and the plug body from the rear portion of the plug body portion 1 to the terminal group. The cord 2 connected in the part 1 is drawn out.

  One end of the lock lever 3 is fixed to the upper surface of the distal end portion 1 a of the plug main body portion 1. The lock lever 3 extends obliquely outward (upward) from the tip root portion 3a toward the other end of the lever, and by pushing down the other end toward the plug main body 1 by hand or the like, The entire lever is elastically displaced so as to be close to the upper surface of the plug body 1.

  The plug body 1 and the lock lever 3 are integrally formed of a resin material or the like. As clearly shown in FIG. 7, the locking portions 4, which will be described later, are provided at the midway position in the length direction of the lock lever 3, more specifically at the midway position slightly closer to the distal end side. Is formed.

  As a specific example, the lateral width of the front end side (root side) of the lock lever 3 is wider than the rear end side, thereby forming a step on the side portion at the midway portion, and this step portion is related. It is a stop 4.

  As shown in FIGS. 8 and 9, the jack 11 has a box-shaped outer shape as a whole, and an opening 12 into which the plug 10 is inserted is formed on the front surface thereof. In addition, although the terminal group connected with the terminal group of the said plug is provided in the opening inner end of the jack 11, it is abbreviate | omitting in the figure. The inner wall of the opening of the jack 11 is formed with a groove 13 having a size capable of accommodating the narrow extending portion 3b on the other end side of the lock lever 3 with the lock lever 3 of the plug 10 extending obliquely outward. ing.

  The opening 12 of the jack 11 is in a state where the lock lever 3 of the plug 10 is pushed down so as to be in contact with or close to the upper surface of the plug main body 1 to the position where both terminal groups are joined to the plug 10 including the lock lever 3. The opening is wide enough to be inserted into the jack 11.

  As clearly shown in FIG. 9, a hooking portion 14 that engages with the locking portion 4 of the lock lever 3 is formed inside the opening portion of the jack 11 adjacent to the groove portion 13 that accommodates the lock lever 3. Yes.

  When the plug 10 is inserted into the opening 12 of the jack 11 while the lock lever 3 is being pushed down, the locking portion 4 of the lock lever 3 passes through the position of the hooking portion 14 of the jack 11 and enters the back side inside the jack. When the push-down of the lock lever 3 is released in this state, the locking portion 4 of the lock lever 3 engages with the hooking portion 14 of the jack 11 and the plug 10 is prevented from coming off.

When pulling out the plug 10 from the jack 11, when the plug 10 is pulled out in the pulling direction while pushing down the lock lever 3, the locking portion 4 of the lock lever 3 is detached from the hooking portion 14 of the jack 11 and the plug 10 is pulled out. The

DESCRIPTION OF EMBODIMENTS Hereinafter, a plug retainer according to an embodiment of the present invention will be described with reference to the drawings.
1 is a perspective view of a plug retainer according to an embodiment of the present invention, and FIG. 2 is a perspective view of a state in which the retainer illustrated in FIG. 1 is attached to a jack and the plug is retained. is there.

  The plug retainer 15 shown in FIGS. 1 and 2 includes a frame member 16 formed by bending, for example, a single metal strip. The frame member 16 has a jack enclosure portion 19 composed of a side plate 17 and a rear plate 18 that are in contact with both side portions and a rear end portion (an end portion opposite to the jack opening) of the jack 11. A pair of arm plates 20 extends from the front end of the packet part 19 toward the plug. The pair of arm plates 20 extend along both side portions of the plug 10, and the tips thereof are formed at a narrow interval so as to grip the cord 2 of the plug 10.

  An overhanging piece 21 that contacts the upper surface of the jack 11 is formed on the upper edge of the side plate 17 constituting the jack enclosure portion 19 of the frame member 16, and the bottom portion of the jack enclosure portion 19 is open. Therefore, the frame member 16 is put on the jack so that the jack 11 is inserted from the open bottom.

FIG. 3 is a plan view showing a state in which the plug 10 is retained.
As shown in FIG. 3, a plug pressing portion 22 that restrains the rear end shoulder portion 10 a of the plug 10 inserted into the jack 11 is formed in the middle portion of the pair of arm plates 20.

  The plug holding portion 22 may be bent in an L shape corresponding to the rear end shoulder portion 10a. However, in this embodiment, the plug holding portion 22 has an inclined surface 23 such that the distance between the pair of arm plates 20 decreases toward the front. It has a form. As shown in FIG. 3, with the plug 10 inserted into the jack 11, the rear end shoulder 10 a of the plug 10 is in contact with an inclined surface at a location where it is connected to a pair of arm plates along the side of the plug. Thus, the plug is pressed against the jack side.

  Following the inclined surface 23, the cord-side distal portion is an end portion 24 that is further narrowed so as to sandwich the cord outer periphery of the plug 10.

  A fastening band 25 made of a member such as rubber or resin is attached to the end portion 24 and has elasticity. The fastening band 25 is attached to the end portion 24 so as to press the end portions 24 of the pair of arm plates 20 against the cord 2. The end of the end portion 24 has a slightly wider plate width so that the fastening band 25 does not come out of the end portion 24 in the cord axis direction (see FIGS. 1 and 2). The fastening band 25 is preferably a member that does not cause a chemical reaction with the frame member 16 (particularly the end portion 24).

  The plug retainer 15 according to the present embodiment can be applied as it is to a plug body portion 1 having a slightly different length. FIG. 4 shows an example in which the plug body 1 is applied to a plug 10B which is longer than the plug 10 of FIGS.

  As described above, since the plug pressing portions 22 of the pair of arm plates 20 are formed by the inclined surfaces 23, the rear end shoulder portion 10 a of the long plug main body portion 1 is the end portion 24 of the pair of arm plates 20 of the frame member 16. It is restrained at the portion of the inclined surface 23 close to the location where it is connected.

  In this case, the pair of arm plates 20 and the end portion 24 slightly expand outward, but since the frame member 16 is formed of an elastic thin plate as a whole, there is no hindrance to the expansion of the pair of arm plates 20, The plug 10 is effectively restrained by the inclined surface 23 even by the elastic restoring force.

  Since the fastening band 25 attached to the end portion 24 also has elasticity, the end portion 24 can be fastened with the same fastening band 25 even though the fastening band 25 is somewhat expanded.

  Next, a procedure for attaching the plug retainer according to the present embodiment will be described with reference to FIGS. FIGS. 5A to 5D are perspective views showing an example of a procedure for attaching the plug 10 and the plug stopper 15 to the jack 11.

  As shown in FIG. 5 (a), the frame member 16 of the plug retainer 15 is put on the jack 11 fixed on the substrate 26 from above as shown in FIG. 5 (b). In this state, as shown in FIG. 5C, the plug 10 is inserted between the pair of arm plates 20 protruding from the frame member 16, and the plug 10 is inserted into the jack 11 through the opening 12 of the jack 11.

  When inserting the plug 10 into the plug retainer 15, the plug 10 is inserted in the longitudinal direction of the pair of arm plates 20 while the pair of arm plates 20 of the frame member 16 is slightly expanded outward, or the frame 10 The plug body 1 may be inserted between the pair of arm plates 20 from above the member 16 and then inserted into the jack. With the plug 10 fully inserted into the jack, the rear end shoulder portion 10a of the plug 10 abuts against the inclined surfaces 23 of the pair of arm plates 20 and is restrained.

  Thereafter, as shown in FIG. 5 (d), a fastening band 25 is attached to the narrowed end portion 24 of the frame member 16, and the end portion 24 is fastened to the cord 2.

  FIG. 6 is a perspective view showing another attachment procedure of the plug stopper 15. In this example, after the plug 10 is inserted into the jack 11 on the board 26 in advance and the terminals are joined to each other, the plug removal stopper 15 is put on the jack 11 from the upper surface side of the jack 11.

  As a result, the plug 10 is also accommodated between the pair of arm plates 20 of the frame member 16, but depending on the length dimension of the plug main body 1, the pair of arm plates 20 may be slightly expanded outwardly. The rear end shoulder 10 a is brought into contact with the inclined surfaces 23 of the pair of arm plates 20.

  Thereafter, the fastening band 25 is attached to the end portion 24 in the same manner as in FIG. 5 to complete the attachment of the plug stopper 15.

  Even when the plug 10 is pulled out by an external force, the frame member 16 holding the rear end shoulder 10a of the plug 10 is held by the rear end 11a (FIG. 9) opposite to the opening 12 of the jack 11. Since it is restrained, the plug 10 restrained by the pair of arm plates 20 is prevented from coming out.

  When the plug 10 is removed from the jack 11, the fastening band 25 is removed by a procedure reverse to the procedure for attaching the plug retainer 15, the frame member 16 is removed from the jack 11, and the plug 10 is removed.

  In the above embodiment, the plug and the jack with the lock lever have been described as the connectors to be applied. However, the present invention is not limited to the connector of this embodiment, and can be similarly applied to other types of plug-in connectors. . The frame member of the plug retainer may be attached to the outer side of the jack in addition to being detachably attached to the jack side.

  In the embodiment, the frame member 16 is formed of a metal thin plate, but may be formed of other materials, for example, synthetic resin or other elastic materials. In the case of a metal plate, it can be manufactured easily and inexpensively by bending press processing of a single band plate and molding processing of a synthetic resin plate.

  Further, in the embodiment, the fastening band 25 for fastening the pair of arm plates 20 of the frame member 16 is made of a material such as rubber or resin that can be fastened by its elasticity. A band (also called a cable tie) may be used. This binding band has a lock part at one end of the band, and it can be bound and tightened through the opposite end, and since the band has a tooth-like pattern, the part through the lock part Will not return.

It is a perspective view of the plug retainer according to the embodiment of the present invention. FIG. 2 is a perspective view of a state in which the retaining member illustrated in FIG. 1 is attached to a jack and the plug is retained. It is a top view in the state where plug removal was performed. It is a top view which shows the example applied to the plug with a lock lever with a long plug main-body part. It is the perspective view which showed an example of the attachment procedure of the plug with respect to a jack and a plug removal prevention tool. It is the perspective view which showed the other attachment procedure of the plug retainer. It is an external appearance perspective view of a plug with a lock lever. FIG. 6 is a perspective view of a state where the plug shown in FIG. 5 is attached to a jack. It is side part sectional drawing of the state which inserted and connected the plug with a lock lever to the jack.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Plug main-body part 1a Tip part 2 Code | symbol 3 Lock lever 3a Tip root part 4 Locking part 10, 10B Plug 10a Rear end shoulder part 11 Jack 11a Rear end part 12 Opening part 13 Groove part 14 Hanging part 15 Plug retainer 16 Frame member 17 Side plate 18 Rear plate 19 Jack enclosure portion 20 Pair of arm plates 22 Plug holding portion 23 Inclined surface 24 End portion 25 Fastening band 26 Substrate

Claims (8)

A plug stopper that prevents the plug inserted into the jack from being pulled out,
A frame member that covers the jack so as to be fixed to the jack in the extraction direction of the plug;
The frame member includes a pair of arm plates that extend from the jack enclosure portion to the plug side, and have a pair of arm plates that sandwich the plug and fix it in the plug extraction direction.   The pair of arm plates of the frame member has end portions that are narrowly spaced so as to engage the rear end shoulders of the plug, and a fastening band that sandwiches the end portions on the outer periphery of the cord of the plug. The plug retainer according to claim 1, further comprising:   3. The plug retainer according to claim 2, wherein the fastening band is formed of an elastic member.   At least the pair of arm plates of the frame member is formed of an elastic plate, and an intermediate portion of the arm plate reaching the end portion is formed on an inclined surface that is engaged with a rear end shoulder portion of the plug. The plug retainer according to any one of claims 1 to 3.   The plug retaining member according to any one of claims 1 to 4, wherein the frame member is integrally fixed to the jack. The plug has an elastically displaceable lock lever having one end attached to the tip of the plug body and the other end extending outward of the plug body.
The jack includes a hooking portion that engages with a locking portion of the lock lever by inserting the plug, and that disengages from the locking portion by pressing down the lock lever. The plug retainer according to any one of 1 to 5.   The plug retaining member according to any one of claims 1 to 6, wherein the frame member is a thin metal plate.   The plug retaining member according to any one of claims 1 to 6, wherein the frame member is a synthetic resin plate.

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